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monoxide or hydrogen fluoride, are produced.
There is a risk of poisoning.
In the event of a leak, escaping refrigerant
may collect on the floor and a suffocating at-
mosphere may form. There is a risk of suffoc-
ation.
In the event of a leak, escaping refrigerant
may get into the atmosphere. As a green-
house gas, its impact is 675 times greater
than the natural greenhouse gas CO
is a risk of environmental damage.
Qualification
▶ Only carry out work on the refrigerant cir-
cuit and sealed components if you have
the necessary specialist knowledge of the
particular properties and risks of R32 refri-
gerant.
▶ Wear the required protective equipment
and use the specific tools.
▶ Comply with the corresponding local laws
and regulations.
Storage
▶ Only store the unit in rooms with no per-
manent ignition sources. Examples of such
ignition sources include naked flames, a
gas-fired boiler that is switched on, or an
electric heater.
▶ Ensure that the refrigerant cannot deliber-
ately get into the waste-water system.
Application
▶ If refrigerant escapes, do not touch any
components of the product.
▶ Note that the refrigerant is odourless.
▶ Do not inhale any vapours or gases that
escape from the refrigerant circuit as a
result of leaks.
▶ Avoid skin or eye contact with the refriger-
ant.
▶ In the event of skin or eye contact with the
refrigerant, seek medical advice.
Transport
▶ During transport, never tilt the product by
any more than the 45°.
Installation and maintenance
▶ If you are working on the product when it
is open, before starting work, use a gas
sniffer to ensure that there is no leak.
▶ The gas sniffer itself must not be an igni-
tion source. The gas sniffer must be calib-
8000017440_FT Installation and maintenance instructions
rated to R32 refrigerant and set to ≤ 25%
of the lower explosive limit.
▶ If you suspect that there may be a leak,
extinguish all naked flames in the vicinity.
▶ If there is a leak that requires repairs to be
carried out with a soldering process, follow
the procedure described in the section "12
Repair and service".
▶ Keep all ignition sources away from the
product. Ignition sources are, for example,
. There
2
open flames, hot surfaces with temper-
atures above 550 °C, electrical devices
or tools that are not free from electrical
sources, or static discharges.
▶ Note that escaping refrigerant has a higher
density than air, and may collect near the
ground.
▶ Ensure that the refrigerant does not collect
in a recess.
▶ Ensure that the refrigerant cannot get in-
side the building via building openings.
Repair
▶ Wear suitable personal protective equip-
ment and bring a fire extinguisher with you.
▶ Only use tools and units that are permitted
for the refrigerant and are in proper work-
ing condition.
▶ Ensure that no air gets into the refrigerant
circuit, into refrigerant-carrying tools or
units, or into the refrigerant cylinder.
▶ Do not use the compressor to pump the
refrigerant into the outdoor unit, and do not
carry out the pump-down process.
Recycling and disposal
▶ Extract the refrigerant that is contained in
the product fully into a suitable vessel.
▶ Arrange for the refrigerant to be recycled
or disposed of by accredited specialists in
accordance with regulations.
1.3.2 Electricity
There is a risk of death from electric shock if
you touch live components.
Before commencing work on the product:
▶ Disconnect the product from the power
supply by switching off all power supplies
at all poles (electrical partition in over-
voltage category III for full partition, e.g.
fuse or circuit breaker).
▶ Secure against being switched back on
again.
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